Rotary engine



3Sl1jeets-Sheet 1.

' Patented Apr. 21, 1885.

J.;G. TELFE-R. ROTARY ENGINE.

ATTORNEY (No ModeL) 3 Sheets Sheet 2.

Patented Apr. 21, 1885.

%%4 IIVVE/VTOI? 7* WWWTMMEY 1.0. TELFER.

ROTARY ENGINE.

(No Model.)

PETERS. PholO-Lflhflgripher. Washington. D C.

v K A??? A M (No Model.) 3 Sheets-$heet 3 J. -0.-TELPER.

ROTARY ENGINE.

Patented AprfZl, 1885. 5.

-NITQED STATES JOHN ooPrELL TELFER, 30F .PALATKA, FLORIDA.

' ROTARYlENGlNE.

EPECIPICATION forming part of Lettersi Patent No. 316,309, dated April21, 1885...... Application filed July 24, 1884. (No model.)

Toall whom it may concern: Be it known that I, JOHN G. TELFER. ofPalatka, in the county of Putnam and State of Florida, have inventedcertain new and useful Improvements in Rotary Engines; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same My invention relates to animprovement in rotary engines and pumps,the object being to so constructthe engine or pump that one or more of the pistons, in the absence ofvan abutment, by contact of the inner drum or cylinder With the outercylinder will at all times perform the function of an abutment,regardless of the direction in which the engine is working.

A further object is to provide an engine of this character which shallbe simple and economical in construction, and durable and efficient inuse; and with these ends in view my invention consists in certain novelfeatures of construction and combinations of parts, as will behereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l is a sectional view of myimprovement on the line a b of Fig. 2. Fig. 2 is a sectional viewshowing the inner and outer cylinders. Fig. 3 is a modification of thedevice shown in Fig. 2. Fig. 4 is a side and edge view of one of thepistons. Fig. 5 is a view of the pistonguides, and Figs. 6 and 7 areviews of amodification.

A represents an outer cylinder provided with a port, a, for the ingressof live steam, and with an exhaust-port, a, the cylinder beingconstructed of any suitable size and material. Within this cylinder isessentially located a drum or cylinder, B, the rear head of the cylinderA being provided with a circular groove, 12, in which fits the rear endof the drum, the latter being open in the back, the forward head of thecylinder A being provided with a circular recess, b, adapted to receivethe forward end of the drum. The said drum which pass pistons D, theinner ends of which are formed in the arcs of a circle and fit around apost or axle, E, either secured to the center ofone ofthe heads of thecylinder A or loosely placed therein, being supported by and form- Theouter ends of the-pistons are provided I with caps F, convex on theirouter surfaces in conformity with the curve of the inner side ofthecylinder A, against which the caps bear, said caps being provided witha-rib, d, on their inner side adapted to fit in the groove in the outeredge of the pistons.

In the slots formed in the drum B are loosely inserted cylindricalguides G, provided with slots d, through which pass the pistons, andalso with slots e, formed at right angles with the slots (1, for thereception of a suitable packing, forming a tight joint between theguides and the pistons.

Having described the construction of my improved engine, I will setforth its operation. Steam or gas being admitted at a, flows in betweenthe cylinder A and the drum, and coming in contact with the pistonsdrives the one which projects farthest from the drum before it, andthereby turns the drum, which is so located in the cylinder that it willat no time in its revolution touch the inner side of the cylinder, andthus presents an abutment. The revolution of the drum is imparted to theshaft O,secured thereto, and thence to the outside of the engine.

In Figs. 6 and 7 I have shown a modification in which a shaft, H,performs the function of the shaft 0 and E in the construction shown inFigs. 1 and 2. The inner drum is mounted on the shaft H eccentric to thecylin inder, to which shaft H is keyed the inner ends of the pistons. Bymeans of this construction, the pistons, when turned by means of thelive steam, impart their motion directly to the shaft and not throughthe drum, as in the former construction.

When used as a pump,the power is applied to the shaft on the outside ofthe cylinder and the power transmitted therefrom to the pistons Havingfully described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. In a rotary engine, the combination, with an outer cylinder, of aninner cylinder located within the outer cylinder and eccentric thereto,and pistons passing through the inner cylinder and bearing against theouter cylinder and working concentric with the latter, the inner ends ofthe pistons bearing against a shaft permanently located in the center ofthe outer cylinder, substantially as set forth.

2. In a rotary engine, the combination, with an outer cylinder, of acylinder located eccentrically within the outer chamber and so placed asto prevent contact with the latter, as described, and pistons bearingagainst a shaft fixed in a position in the center of the outer cylinderand passing through the inner cylinder bearing against the outercylinder, substantially as set forth.

3. In a rotary engine, the combination, with an outer cylinder, of acylinder located eccentrically therein and provided with slots, pistonsprovided on their outer ends with caps bearing against the outercylinder, the pistons passing through said slots and having their innerends bearing against a shaft rigidly secured to the center of said outercylinder, substantially as set forth.

' 4. In a rotary engine, the combination, with an outer cylinderprovided with steam entrance and exhaust ports, of a cylinderlocatedeccentrically within the outer cylinder and provided with slots, groovedguides loosely placed in the slots, and pistons passing the guides andbearing against a shaft rigidly secured to the center of the outercylinder and passing through said slotted guides, substantially as setforth.

5. The combination, with an outer cylinder provided with steam entranceand exhaust ports, of a cylinder located eccentrically within the outercylinder and provided with slots, cylindrical slotted guides looselyplaced within the slots, and pistons passing through the guides andhaving their inner curved ends bearing against a shaft fixed to thecenter. of the outer cylinder and their outer ends provided with capsbearing against the outer cyli nder, substantially as set forth.

6. The combination, with the cylinders A B, of pistons D, provided withcaps F, guides G, axle E, and fixed shaft 0, all of the above partscombined and adapted to operate substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN GOPPELL TELFER.

Witnesses:

E. F. DUNNING, W. E. RANSOM.

